ETS 250 and ETS 400 are equipped with sight glass with moisture indicator. Body and AST motor enclosure in brass, connections in copper. Compatibility: R407C, R404A/R507, R134a, R22. For other refrigerants, please contact your local Danfoss representative. MOPD: 33 bar (480 psig). Max. working pressure: 34 bar (493 psig). Refrigerant temperature range: –40°C - 65°C (–40°F - 150°F). Ambient temperature: –40 - 60°C (–40 - 140°F). Motor enclosure: IP 67. Electrical connection: M12 connector.